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Finding the Fourth Proportional to 117,164.16, 161,686.70 and 63,449.26

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Solution

The fourth proportional to 117,164.16, 161,686.70 and 63,449.26 is: 87,560.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,164.16 : 161,686.70 = 63,449.26 : x
  2. Step 2: Convert to fraction form
    117,164.16/161,686.70 = 63,449.26/x
  3. Step 3: Cross multiply
    117,164.16x = 161,686.70 × 63,449.26
  4. Step 4: Simplify right side
    117,164.16x = 10,258,901,466.84
  5. Step 5: Solve for x
    x = 10,258,901,466.84/117,164.16
  6. Step 6: Final answer
    x = 87,560.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.